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Finding the Fourth Proportional to 624,985.32, 862,497.42 and 353,064.69

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Solution

The fourth proportional to 624,985.32, 862,497.42 and 353,064.69 is: 487,239.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,985.32 : 862,497.42 = 353,064.69 : x
  2. Step 2: Convert to fraction form
    624,985.32/862,497.42 = 353,064.69/x
  3. Step 3: Cross multiply
    624,985.32x = 862,497.42 × 353,064.69
  4. Step 4: Simplify right side
    624,985.32x = 304,517,384,218.10
  5. Step 5: Solve for x
    x = 304,517,384,218.10/624,985.32
  6. Step 6: Final answer
    x = 487,239.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.